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Ceramic Decorating Tool Techniques - Ceramic Arts Daily

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ceramic artsdaily.org<br />

ceramic decorating<br />

tool techniques<br />

how to use clay pencils, slip<br />

trailers, glaze pens, and<br />

carving tools to decorate ceramics<br />

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<strong>Ceramic</strong> <strong>Decorating</strong> <strong>Tool</strong> <strong>Techniques</strong><br />

How To Use Clay Pencils, Slip Trailers, Glaze Pens,<br />

and Carving <strong>Tool</strong>s to Decorate <strong>Ceramic</strong>s<br />

We all love tools, especially pottery tools, and we normally think about forming when we talk about tools for ceramics,<br />

but the most useful tools we have, besides our hands, are tools for decorating our work. A decorative surface, of<br />

course, is the first thing noticed about a piece of pottery, and as with all things made by hand, the right tools make<br />

all the difference. Regardless of what kind of surface decoration you are interested in, or currently practice, there is<br />

always a way to make your tool box or bag of tricks bigger. <strong>Ceramic</strong> <strong>Decorating</strong> <strong>Tool</strong> <strong>Techniques</strong>: How To Use Clay<br />

Pencils, Slip Trailers, Glaze Pens, and Carving <strong>Tool</strong>s to Decorate <strong>Ceramic</strong>s explains those tools in detail and shows you<br />

how to use them for the greatest effect for your own ceramic surfaces. Make your own ceramic colored pencils, or try<br />

using a combination of dry and wet decorating techniques to get maximum depth out of your work.<br />

<strong>Decorating</strong> <strong>Ceramic</strong>s with Clay<br />

Pencils, Wax Crayons, Glaze Pens,<br />

and Slip Trailers<br />

By Robin Hopper<br />

There are so many ways to decorate the ceramic surface, and this overview of<br />

several decorating tools used to apply color to clay includes recipes for making<br />

your own pencils and crayons, as well as how to approach using each type of<br />

decorating tool.<br />

Slip Trailer <strong>Techniques</strong> for <strong>Decorating</strong><br />

the <strong>Ceramic</strong> Surface<br />

By Robin Hopper<br />

Using only a simple slip trailer and a few colored slips, you can achieve many<br />

different types of surface decorations and patterns in a short period of time.<br />

Using Simple <strong>Tool</strong>s to Decorate<br />

<strong>Ceramic</strong>s with Complex Designs<br />

By Molly Hatch<br />

Sometimes the simplest objects are the best tools for decorating pottery. Using a<br />

pencil and laminated paper stencil, Molly Hatch walks you though how to transfer<br />

a design to a pot and then layer color onto the surface for a striking result.<br />

www.ceramicartsdaily.org | Copyright © 2010, <strong>Ceramic</strong> Publications Company | <strong>Ceramic</strong> <strong>Decorating</strong> <strong>Tool</strong> <strong>Techniques</strong> | 1


<strong>Decorating</strong> <strong>Ceramic</strong>s<br />

with Clay Pencils,<br />

Wax Crayons, Glaze<br />

Pens, and Slip Trailers<br />

For those who are excited about the graphic possibilities<br />

of the ceramic surface and enjoy using<br />

drawing implements that have something of a<br />

sharp, scratchy or linear nature, the marks made<br />

by pencils, pens, crayons and trailers likely will make them<br />

favorite tools of expression. These tools are the foundation<br />

of written or pictographic communication in Western<br />

civilization, whereas the brush is the foundation of mark<br />

making for most Eastern civilizations. Those raised in the<br />

Western traditions usually feel more affinity with scratchy<br />

drawing tools than with the soft, calligraphic brushes. Fortunately,<br />

the range of ceramic decoration tools encompasses<br />

both soft and hard possibilities.<br />

<strong>Ceramic</strong> Pencils<br />

Regular pencils, with what we call “leads,” actually are<br />

made from graphite of various degrees of hardness from<br />

6H (extremely hard) to 6B (extremely soft). Marks made<br />

with graphite pencils on ceramic surfaces will burn out<br />

in the firing, which can be very convenient, as the firing<br />

erases the guidelines or grids used for painting or draw-<br />

Trailers, ceramic pens, and pencils.<br />

By Robin Hopper<br />

Jack Sures, Canada, Wide Bowl (detail), ceramic ink drawing<br />

on porcelain. Private collection. Photo: Judi Dyelle.<br />

ing on patterns and designs in ceramic pigments. Guidelines<br />

also can be painted on with vermilion watercolor<br />

paint, which also burns away.<br />

Pencils for ceramic use (to make marks that don’t burn<br />

out in firings) are made with combinations of refractory<br />

materials, clays, and colorants and are usually only commercially<br />

available in one level of hardness that would<br />

probably equate to the HB rating of a graphite pencil. HB<br />

hardness is midway between 6H and 6B. Companies that<br />

produce ceramic pencils have a habit of coming and going,<br />

but most ceramic supply houses usually will be able<br />

to find and supply them. Pencils are commercially available<br />

in a very limited variety of colors.<br />

<strong>Ceramic</strong> pencils are normally used on bisque-fired<br />

clay that has been sufficiently hardened to withstand the<br />

pressure needed for satisfactory mark- making. Since the<br />

pencil “lead” may be quite fragile in use, the smoother<br />

the clay surface, the better the drawing. Bisque surfaces<br />

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Verne Funk, California, USA, Split—Portrait of the Artist, 18 in. (46 cm) in diameter,<br />

wheel-thrown whiteware, underglaze pencil, glaze, 1996.<br />

can be smoothed by sanding with wet<br />

and dry silicon carbide or aluminum<br />

oxide papers, or the surface of<br />

the greenware may be sprayed or<br />

brushed with a terra sigillata coating<br />

prior to the bisque firing to provide<br />

a harder working surface. <strong>Ceramic</strong><br />

pencils may be used on the ceramic<br />

surface just like their graphite equivalent<br />

on paper. Although sharpened<br />

points tend to wear quickly on the<br />

abrasive ceramic surface, the combination<br />

of pencil tip marks, side-ofpencil<br />

marks, and the opportunity to<br />

create tones through finger-rubbing<br />

or smudging the soft image gives<br />

wide potential for drawn imagery<br />

development.<br />

If the commercial underglaze<br />

pencils are too soft for satisfactory<br />

use, it is quite easy to make your own<br />

and harden them to a more satisfactory<br />

and less friable state. <strong>Ceramic</strong><br />

pencil drawings can be fired onto<br />

the bisque-fired clay to harden them<br />

before glazing, or, alternatively, they<br />

can be fired on unglazed high-fired<br />

clays, such as porcelain or stoneware,<br />

without the need for a glaze coating.<br />

The selection of colorants or mixtures<br />

of colorants used in the coloring<br />

of the “lead” will control the<br />

effectiveness of the drawings at high<br />

temperatures, but most will tolerate<br />

cone 10.<br />

To make ceramic pencils and<br />

pastels, use a porcelain-type slip with<br />

50 percent white firing ball clay or<br />

plastic kaolin. For dry strength in the<br />

green state, 3 percent macaloid or 5<br />

percent bentonite should be added.<br />

<strong>Ceramic</strong> Pencil Slip Recipe<br />

White firing ball clay . . . . . . . . . . . . .50


might cause crawling through lack of<br />

glaze adhesion.<br />

Crayons<br />

To make wax crayons, mix the dry<br />

recipe above with ordinary commercial<br />

wax resist. Form the crayon,<br />

and let it dry. Since the crayon will<br />

contain some latex, it also will have<br />

a slight resist effect on the work,<br />

particularly when used on bisquefired<br />

ware. For a crayon with greater<br />

resist qualities, stir colorants into<br />

wax, let cool, roll the wax into rods<br />

of different widths, and cut the rods<br />

in convenient lengths.<br />

Underglaze Pens<br />

Underglaze pens are like superfine<br />

trailers containing an “ink” that<br />

gives good flowability for drawing.<br />

They are available commercially<br />

from a number of producers, or you<br />

can make your own with the fine<br />

trailers that are available. You can<br />

also dip any form of “nibbed” pen,<br />

from fine-pointed mapping pens, to<br />

quills or sharpened bamboo, into<br />

ceramic ink.<br />

Black <strong>Ceramic</strong> Ink Recipe<br />

Calcium borate . . . . . . . . . . . . . . . . .3


Slip Trailer <strong>Techniques</strong><br />

To trail slip in lines or dots,<br />

the slip should be thick<br />

enough to stand up and not<br />

run, but it should be very<br />

smooth and consistent.<br />

Trailing on top of the base<br />

slip offers many decorative<br />

options. you could simply<br />

trail slip and let it sit on top<br />

of the base color as applied.<br />

Designs can get a free as<br />

you feel, so don’t think geometry<br />

is the only option.<br />

for <strong>Decorating</strong> the<br />

<strong>Ceramic</strong> Surface<br />

Apply a base coat of slip<br />

that is thick enough to<br />

remain wet for a while, but<br />

thin enough to spread into<br />

an even, smooth layer.<br />

Combing through trailed slip<br />

makes a simple design very<br />

complex in short order. This<br />

takes practice to do smoothly,<br />

without hesitation.<br />

Free-form designs are good<br />

for marbling. Gently shake<br />

the piece to move the slip.<br />

By Robin Hopper<br />

Pour out the excess slip<br />

after you have covered all<br />

desired areas, and clean up<br />

any over run.<br />

The more complex you get<br />

with your initial slip design,<br />

the more options become<br />

available, but balance the<br />

trailing with the combing.<br />

You can stick with dots<br />

only, layering them up to<br />

increase contrast.<br />

You can comb through the<br />

slip with a tool or fingers.<br />

The thickness of the slip<br />

determines the clarity of<br />

the marks.<br />

Because this trailed design<br />

was a bit more complex, a<br />

single line is pulled through<br />

selective areas with a single<br />

reed or feather quill.<br />

Any design can be flattened<br />

by very gently tapping the<br />

piece to settle the slip.<br />

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Photos: Judi Dyelle


Using Simple <strong>Tool</strong>s to<br />

Decorate <strong>Ceramic</strong>s with<br />

Complex Designs<br />

I<br />

have always been interested in drawing.<br />

As an undergraduate, I focused on<br />

drawing for the majority of my time in<br />

school. It wasn’t until my final year that<br />

I was shown surface decoration techniques for<br />

clay that are similar to printmaking and drawing<br />

processes. It was this marriage of drawing<br />

and clay that has driven the development of my<br />

current work.<br />

There’s something magical in the ability<br />

to interpret what I see through my hands.<br />

I think of drawing as a visual language<br />

similar to writing; both can be communication<br />

tools. I am often surprised by the small<br />

narratives that appear in the patterns I draw on<br />

the surfaces of my pots. Each bird has its own<br />

distinct personality and expression . . . . A moth<br />

will buzz around a peony. The patterns I draw<br />

are always my interpretation and representation<br />

of an already existing pattern. I sometimes<br />

combine elements of different patterns, in turn<br />

creating new patterns. I play with the scale of the pattern<br />

on the pot. How the pot frames the image often<br />

dictates the pattern itself.<br />

I spend a large amount of time looking at historic<br />

fabrics as source material and I’m always collecting<br />

new patterns to add to my repertoire. I pull out new<br />

patterns when I need a challenge and I draw the pattern<br />

on paper a few times to familiarize myself with it<br />

before experimenting on my pots. I use porcelain for<br />

my work for its durability and translucence. I love the<br />

similarity of pure white porcelain to a blank piece of<br />

paper. My forms are inspired by contemporary product<br />

design, 18th century European factory ceramics<br />

as well as the English ceramics of the Leach/Cardew<br />

studio tradition.<br />

By Molly Hatch<br />

Finch Cup with Baroque Frame,<br />

13 inches (33 cm) in width.<br />

Throwing a Blank Canvas<br />

When I’m throwing, I think of the pots and their<br />

forms as that blank piece of paper. I strive to keep<br />

my forms simple, quiet, and uncomplicated. This<br />

simplicity allows the drawing to become the major<br />

focus of each pot, rather than a competition between<br />

form and surface.<br />

The simplest and most popular pot I make is a<br />

tumbler form that I refer to as a beaker. I use about<br />

a pound of clay to make the beakers pictured in this<br />

article. When throwing, I use very few tools other than<br />

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1<br />

When throwing, use the crook of your finger to shape the<br />

lip of a tumbler.<br />

3<br />

Gently wrap the laminated pattern around the cup and<br />

use a quill or pencil to trace the image.<br />

5<br />

Use the transferred image as a guide for drawing deeper<br />

lines into the surface.<br />

my hands. I use the crook of my forefinger and middle<br />

finger to shape the lips of my pots. When I do use<br />

tools, my favorite rib is a square rib fashioned after<br />

a Michael Cardew design and made for me by my<br />

husband who is a woodworker (figure 1). I’m careful<br />

to use the rib as little as possible because I enjoy the<br />

pots much more when there’s evidence of my hand in<br />

them. When I’m trimming, I usually use a bat dampened<br />

slightly with a sponge. I tap the pot I’m trimming<br />

on center and then, using the slightly damp surface of<br />

the bat, I apply pressure to the base of the pot, which<br />

creates a slight suction and secures the pot to wheel<br />

Laminated paper template of drawing can help maintain<br />

consistency in a design when transferring images to a set.<br />

Finish off the rest of the drawing freehand, using the template<br />

as a visual reference.<br />

for trimming. When using this trimming technique, it<br />

helps to keep one hand on the pot at all times to catch<br />

it in the event that the suction gives way.<br />

Image Transfer<br />

Mishima is a traditional Korean slip-inlay technique.<br />

The Korean pots you see with mishima decoration<br />

typically use several colors of slip inlaid into the same<br />

piece. I basically use the same black slip recipe for all<br />

of my mishima drawing. I always refer to a pattern<br />

when I’m drawing on my pots and sometimes use a<br />

template to transfer a detail of the pattern (figure 2).<br />

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2<br />

4<br />

Remove the template to reveal the transferred tracing image<br />

now impressed into the clay.<br />

6


7<br />

Apply a layer of stained slip over the drawing using a<br />

wide brush.<br />

9<br />

Use a vitreous engobe mixed with a brushing medium to<br />

create color accents.<br />

10<br />

Though it fluxes a bit at higher temperatures, the engobe<br />

can be used to fill in color areas on the bottom.<br />

In this case, I am using the template to transfer the bird<br />

in the pattern onto the cup surface. I make my templates<br />

by laminating my own drawing of a found pattern.<br />

This is helpful if you are trying to make multiples,<br />

but still requires a lot of drawing and interpretation<br />

because you’re drawing on a three-dimensional surface.<br />

Inlaying the Color<br />

All of my mishima is done when the pots are a firm<br />

leather hard. Usually they are ready to draw on just<br />

after trimming is finished. To follow this technique,<br />

start the transfer by gently wrapping the laminated<br />

Wipe the excess slip from the surface of the pot using a<br />

clean sponge.<br />

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8<br />

Tumbler, 5 3 /4 inches (15 cm) in height, porcelain,<br />

mishima slip inlay, vitreous engobe, fired to cone 6.<br />

Drawing <strong>Tool</strong>s<br />

There are many tools you can use to incise the surface<br />

of the pot for mishima. I have gone through<br />

stages of preferring particular tools —pencil-style<br />

X-Acto knives, commercial stylus carving tools (sold<br />

in ceramic supply stores), African porcupine quills<br />

(available at Santa Fe Clay) among others. My current<br />

drawing tool of choice is a calligraphy pen with<br />

interchangeable metal tips. It’s the same kind of pen<br />

that you dip in ink and would use to do traditional<br />

calligraphy; I just use it on clay instead.


pattern around the cup, taking care<br />

to position the image exactly where<br />

you would like it to be on the cup.<br />

Then, using an African porcupine<br />

quill (dull-tipped pencils work well<br />

too), transfer the image by tracing<br />

over the lines on the template with<br />

enough pressure to draw into the<br />

surface of the pot underneath (figure<br />

3). Remove the template (figure 4)<br />

and use the transferred image as a<br />

guide for drawing deeper lines into<br />

the surface of the pot (figure 5). You<br />

don’t need to draw very deeply into<br />

the surface for mishima to work.<br />

I often feel as though I am just<br />

scratching into the surface of the<br />

clay. After going over the tracing,<br />

finish off the rest of the drawing<br />

freehand, using the template pattern<br />

as a visual reference (figure 6).<br />

Just before you apply the slip to<br />

the surface of the pot, use a softbristled<br />

brush, such as a shaving<br />

brush, to get rid of as many crumbs<br />

as possible. If you don’t remove<br />

the crumbs, they can often stick to<br />

the pot and create problems when<br />

removing excess colored slip from<br />

the surface later.<br />

Using a wide brush, apply a<br />

layer of stained slip to the drawing<br />

(figure 7). I tend to use a thinner<br />

slip so that it has an easier time<br />

getting into the small details of the<br />

drawing. Thicker slips tend to only<br />

partially fill in the drawn lines in<br />

the surface. Once the pot has dried<br />

back to the dry leather-hard state<br />

and any sheen on the slip has disappeared,<br />

begin to wipe away the<br />

excess slip from the surface of the<br />

pot using a clean sponge (figure 8).<br />

You need to clean the sponge often<br />

during this process to avoid leaving<br />

streaks of color on the surface<br />

of the pot. As you work, you’ll<br />

see your design emerge. The slip<br />

remains in the recessed lines of the<br />

drawing, creating the inlaid design.<br />

Tip: If you are using a clay with a<br />

lot of grog, it’s a good idea to alternate<br />

between using the sponge to<br />

remove the slip and smoothing the<br />

surface with a rubber or metal rib.<br />

At this point let the pot dry completely<br />

and then bisque fire it.<br />

Adding Color<br />

On many of my pots, I add color<br />

accents to the mishima pattern<br />

through painting. I do all of my<br />

painting after the pot has been<br />

bisque fired and before I do any<br />

glazing. For the color, I use a cone<br />

04 vitreous engobe that I mix<br />

myself, but commercial underglazes<br />

also work well. If you use an engobe,<br />

combine it in a 1:1 ratio with<br />

brushing medium using a palette<br />

knife until it is well mixed (figure<br />

9). The mixing-medium helps make<br />

the engobe more brushable and<br />

thins it out so that you can build up<br />

color in layers, similar to painting<br />

on canvas. This layering makes for<br />

more solid colors with less visible<br />

brush strokes.<br />

The engobe recipe that I use tends<br />

to flux a bit at cone six but it can still<br />

be used to fill in the line drawings on<br />

the bottoms of pots (figure 10). After<br />

I finish adding the color, I use a clear<br />

glaze over everything except the bottom<br />

of the pot, then fire the work in<br />

oxidation to a hot cone six.<br />

Molly Hatch is a full-time studio potter in<br />

Northampton, Massachusetts. She studied<br />

ceramics as an undergraduate student at<br />

the School of the Museum of Fine <strong>Arts</strong> in<br />

Boston and received her MFA from the<br />

University of Colorado, Boulder. To see<br />

more of Hatch’s work, visit her website at<br />

www.mollyhatch.com or her Etsy shop at<br />

mollyhatch.etsy.com.<br />

Molly Hatch working in her studio<br />

while she was a resident at the John<br />

Michael Kohler <strong>Arts</strong> Center, Sheboygan,<br />

Wisconsin.<br />

Recipes<br />

Andrew Martin’s Brushing Slip<br />

(up to cone 10)<br />

Ferro Frit 3110 . . . . . . . . . . . . . . . . . 30 %<br />

Ball Clay . . . . . . . . . . . . . . . . . . . . . 20<br />

Mason Stain 6600 (black) . . . . . . . . 50<br />

Total 10


Making Marks<br />

Discovering the ceraMic surface<br />

BY ROBIN HOPPER<br />

Making Marks is about ceramic surface enrichment, the<br />

processes used for achieving it, and the thought concepts,<br />

idea development and personal research behind it. “Making<br />

marks” is a generalized term used through the visual arts<br />

when referring to the alteration of any surface by any of the<br />

tools that artists employ. In using this term for the title of this<br />

book, Hopper refers to the huge variety of marks that may<br />

be achieved through ceramic decoration processes, at any or<br />

all of the varied and various stages that the clay object goes<br />

through in its transformation from soft, wet, malleable clay to<br />

heat-hardened, impermeable ceramic.<br />

Price $44.95<br />

FREE SHIPPING when you<br />

order online (US orders only)<br />

www.ceramicartsdaily.org/bookstore<br />

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